scholarly journals Age-Related Declines in Lower Limb Muscle Function are Similar in Power and Endurance Athletes of Both Sexes: A Longitudinal Study of Master Athletes

2021 ◽  
Author(s):  
Alex Ireland ◽  
Uwe Mittag ◽  
Hans Degens ◽  
Dieter Felsenberg ◽  
Ari Heinonen ◽  
...  
Keyword(s):  
Lower Limb ◽  
Muscle Function ◽  
Peak Power ◽  
Muscle Power ◽  
Endurance Athletes ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Master Athletes ◽  
Cross Sectional ◽  
Age Related

AbstractThe age-related decline in muscle function, particularly muscle power, is associated with increased risk of important clinical outcomes. Physical activity is an important determinant of muscle function, and different types of physical activity e.g. power-based versus endurance-based exercise appear to have differential effects on muscle power. Cross-sectional studies suggest that participation in power-based exercise is associated with greater muscle power across adulthood but this has not been investigated longitudinally. We recruited eighty-nine male and female power and endurance master athletes (sprint and distance runners respectively, baseline age 35–90y). Using jumping mechanography, we measured lower limb muscle function during a vertical jump including at least two testing sessions longitudinally over 4.5 ± 2.4y. We examined effects of time, discipline (power/endurance) and sex in addition to two- and three-way interactions using linear mixed-effects models. Peak relative power, relative force and jump height, but not Esslingen Fitness Index (indicating peak power relative to sex and age-matched reference data) declined with time. Peak power, force, height and EFI were greater in power than endurance athletes. There were no sex, discipline or sex*discipline interactions with time for any variable, suggesting that changes were similar over time for athletes of both sexes and disciplines. Advantages in lower limb muscle function in power athletes were maintained with time, in line with previous cross-sectional studies. These results suggest that improvements in lower limb function in less active older individuals following power-based training persist with continued adherence, although this requires further investigation in interventional studies.

Mid-thigh cross-sectional area and lower limb muscle function in patients with lung cancer

2015 ◽  
Author(s):  
Valerie Coats ◽  
Fernanda Ribeiro ◽  
Lise Tremblay ◽  
Brigitte Fortin ◽  
François Maltais ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Lower Limb ◽  
Muscle Function ◽  
Cross Sectional Area ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Sectional Area ◽  
Cross Sectional

scholarly journals Lean mass and lower limb muscle function in relation to hip strength, geometry and fracture risk indices in community-dwelling older women

2018 ◽  
Vol 30 (1) ◽  
pp. 211-220 ◽  
Author(s):  
A. Elhakeem ◽  
A. Hartley ◽  
Y. Luo ◽  
A. L. Goertzen ◽  
K. Hannam ◽  
...  
Keyword(s):  
Fracture Risk ◽  
Older Women ◽  
Lean Mass ◽  
Lower Limb ◽  
Muscle Function ◽  
Community Dwelling ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Hip Strength ◽  
Risk Indices

scholarly journals Effects of Pulmonary Rehabilitation on Gait Characteristics in Patients with COPD

2019 ◽  
Vol 8 (4) ◽  
pp. 459 ◽  
Author(s):  
Wai-Yan Liu ◽  
Kenneth Meijer ◽  
Jeannet Delbressine ◽  
Paul Willems ◽  
Emiel Wouters ◽  
...  
Keyword(s):  
Lower Limb ◽  
Muscle Function ◽  
Pulmonary Rehabilitation ◽  
Forced Expiratory Volume ◽  
Chronic Obstructive ◽  
Poor Responders ◽  
Stride Time ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Gait Characteristics

Pulmonary rehabilitation (PR) improves lower-limb muscle function in patients with chronic obstructive pulmonary disease (COPD). However, it remains unclear whether patients improve gait characteristics, in particular stride-to-stride fluctuations that are associated with fall risks. This study aims to identify whether, and to what extent, PR affects positively gait characteristics in COPD. In this prospective observational study, 44 COPD patients (aged: 62 ± 7 years; Forced expiratory volume in 1 s 56 ± 20% predicted) performed self-paced, treadmill 6-min-walk tests (Gait Real-time Analysis Interactive Lab) before and after PR, while spatiotemporal parameters and center of mass position were recorded (100 Hz, Vicon Nexus). Standard deviation, coefficient of variation, predictability (sample entropy), and consistency in organization (local divergence exponent) were calculated. Sub-analysis was performed to identify gait differences between good and poor responders (<30 m change in a 6-min-walk distance). Patients demonstrated shorter stride times (p = 0.001) and improved lower-limb muscle function (p < 0.001) following PR. The good responders had a greater increase in stride length (p < 0.001) and a greater decrease in stride time (p < 0.001) compared to the poor responders. Current PR improved stride time in patients, while movement patterns within stride-to-stride fluctuations did not change. Training programs specifically targeting balance issues and gait function may be beneficial in improving gait characteristics in COPD.

Effects of age and limb dominance on upper and lower limb muscle function in healthy males and females aged 40–80 years

2010 ◽  
Vol 28 (6) ◽  
pp. 667-677 ◽  
Author(s):  
Massimiliano Ditroilo ◽  
Roberta Forte ◽  
Piero Benelli ◽  
Danilo Gambarara ◽  
Giuseppe De vito
Keyword(s):  
Lower Limb ◽  
Muscle Function ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Males And Females ◽  
Limb Dominance ◽  
Healthy Males

The effect of co-existent chronic heart failure (CHF) on lower limb muscle function in COPD: Propensity matched analysis

2016 ◽  
Author(s):  
Veronica Delogu ◽  
Claire M. Nolan ◽  
Jane L. Canavan ◽  
Sarah E. Jones ◽  
Elizabeth J. Fletcher ◽  
...  
Keyword(s):  
Heart Failure ◽  
Chronic Heart Failure ◽  
Lower Limb ◽  
Muscle Function ◽  
Lower Limb Muscle ◽  
Limb Muscle

scholarly journals Plyo-Accentuated Eccentric Loading Methods to Enhance Lower Limb Muscle Power

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Matthew J. Handford ◽  
Fernando Martín Rivera ◽  
Sergio Maroto-Izquierdo ◽  
Jonathan D. Hughes
Keyword(s):  
Lower Limb ◽  
Muscle Power ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Loading Methods

scholarly journals Predictive potentials of 8 muscle strength actions, KOOS-pain, and Örebro-psychosocial difficulties on self-reported activities-of-daily-life function in patients with knee osteoarthritis: an exploratory regression-based cross-sectional study

2020 ◽  
Author(s):  
Kjartan Vårbakken ◽  
Håvard Lorås ◽  
Kjell Nilsson ◽  
Monika Engdal ◽  
Ann-Katrin Stensdotter
Keyword(s):  
Muscle Strength ◽  
Lower Limb ◽  
Daily Life ◽  
External Rotation ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Cross Sectional ◽  
Ankle Eversion ◽  
Psychosocial Difficulties ◽  
Life Function

Abstract BackgroundThe aim of the study was to explore the relative predictive potentials of a discriminative and comprehensive set of lower-limb muscle strength factors onto self-reported physical-activities-of-daily-life-function (SR-ADL-function) in patients with knee osteoarthritis (KOA), when adjusting for prior known strong prospective predictors in a statistical model which covers the functional domains of the International Classification of Function, Disability, and Health (ICF). MethodsThe design was exploratory, patient-only, cross-sectional, and multivariable regression-based, rotating 8 strength-variables onto a hierarchical model. The setting was an Osteoarthritis-school in a secondary-care hospital in Norway. The participants were 28 Caucasian patients with mild-to-moderate symptomatic and radiographic KOA (mean age 61; 64% women) referred by general physicians to an osteoarthritis-school. Excluded patients had trauma to the lower limbs, BMI >35, and age beyond 45 to 70. The dependent/outcome variable was SR-ADL-function (Knee Injury and Osteoarthritis Outcome Score [KOOS-ADL]). The known predictors were prior documented discriminative KOOS-Pain and psychosocial difficulties (Örebro Musculoskeletal Pain Questionnaire), together with 8 candidate predictor lower-limb muscle-strength actions (Biodex and Commander II dynamometer recorded).ResultsMutually adjusted for pain and psychosocial difficulties (R2 = 0.71), the predicting muscle-strength actions explained the following unique variances in SR-ADL-function: hip external rotation 7.6% (p<0.010), ankle eversion 4.0% (p=0.050), hip internal rotation 3.8% (p=0.060), ankle inversion 3.6% (p=0.066). The remaining 4 muscle-strength actions explained from 2.0% to 1.2% (p>0.099), where knee extensor strength explained the least unique variance. Flipped, the current three best potential prediction models explained the following substantial proportions of variance in SR-ADL-function: 1) KOOS-pain, 66%; 2) KOOS-pain and Örebro psychosocial difficulties, 71%; and 3) KOOS-pain, Örebro psychosocial difficulties, and hip external rotation strength, 78%.ConclusionsAdjusted for pain and psychosocial difficulties, hip rotations and ankle eversion-inversion strength indicate substantial cross-sectional potentials for predicting SR-ADL-function for patients with KOA aged 45 to 70 in primary/hospital health-care. Relevant for future prevention and prediction/treatment studies, however, we suggest clinical researchers to consider the current muscle-strength actions together with the even stronger biopsychosocial predictors KOOS-pain and Örebro psychosocial difficulties for future ICF domain-covering models of SR-ADL. Future confirmative studies are needed to refute or generalize these pioneering exploratory conclusions.

scholarly journals The effect of support surface and footwear condition on postural sway and lower limb muscle action of the old people

2019 ◽  
Author(s):  
Meizhen Huang ◽  
Kit-lun Yick ◽  
Sun-pui Ng ◽  
Joanne Yip ◽  
Roy Cheung
Keyword(s):  
Lower Limb ◽  
Postural Stability ◽  
Muscle Activation ◽  
Postural Sway ◽  
The Elderly ◽  
The Body ◽  
Support Surface ◽  
Lower Limb Muscle ◽  
Limb Muscle ◽  
Age Related

Abstract Background: Diminished somatosensory function and lower plantar cutaneous sensitivity have been identified as a critical age-related change, which is related to postural instability in the older population. Footwear is suggested that can modulate the postural stability by altering the interface between the foot sole and the ground. However, it is unclear whether this footwear effect could also influence lower limb muscle activation for the elderly. This study aimed to investigate the footwear insole texture and supporting surface condition on static postural stability and lower limb muscle activation for healthy older people. Methods: This is a single-session study with repeated measurements. Twenty-three healthy older female stood on the firm (i.e., concrete floor) and foam surfaces with their eyes open in the three footwear conditions, namely barefoot, plain shoes and nodulous insole shoes, for 30 seconds. Static postural sway and muscle activation of biceps femoris (BF), vastus lateralis (VL), tibialis anterior (TA), and lateral gastrocnemius (LG) of the dominant leg were measured during each testing condition. Results: compared to firm surface, standing on the foam could significantly increase the body sway and lower limb muscle activation (p<0.05); compared to barefoot, when standing on the foam, wearing footwear significantly decreased the VL and TA muscle activation and minimize the postural sway in ML and AP direction, while the influence is larger for the nodulous shoes compared to the plain shoes. A positive correlation was observed between the lower limb muscle activation and AP (r=0.327-0.389, p<0.001) and total sway path length (r=0.317-0.427, p<0.001). Conclusions: footwear could improve the postural stability and decease the fall risk comparing to barefoot when the somatosensory input is in disturbance, while the improvement is larger when wearing nodulous insole footwear for the elderly.

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